Steam-generator



(No Model.)

H. HAYES 8v B. P. BONNELL.

STEAM GENERATOR. N0. 352,319. Patented Nov. 9, 1886-.

nume Iliilll N PETERS. Phck'rlihugmphnr, Washington, D. CV

STATES UN ITE l- PATENT muon.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 352,319, dated November 9, 1886.

Application filed April 20, 1F86. Serial No. 199,470. (No model.)

T0 aZZ whom it may concern:

Be it known that we, HENRY HAYES and BERTINE P. BoNNnLL, of Chicago, State of Illinois, have invented certain new and useful Improvements in Steam-Generators, of

@which the following is a specification.

The improvements relate to steam-generators designed and arranged for heating dwellings; and the object is to furnish an economical, durable, safe, and inexpensive apparatus for this purpose which can be easily operated by any unskilled person of ordinary understanding; and the invention consists in the combinations and arrangement hereinafter more particularly described and claimed.`

The accompanying` drawings illustrate the invention. Figurelisavertical section. Fig. 2 is a horizontal section on line or m.

A designates the boiler, which is a hollow cylinder, the central opening, a, of which at the upper part being only large enough to admit the fuel-magazine B; but the lower part is considerably expanded, so as to form a large fire-chamber, a', around'and below the lower end of the fuel-magazine and fire-grate C, and surround the fire with a thin sheet of water, c, between the outer and inner plates of the boiler. The outer part of the boiler and the inner part, a2, as well as the top and bottom, are made of good boiler-iron securely riveted together. Two or more rows of pipes, a3, connect the waterspace above with the narrow space c, so as to afford a circulation of the water from the lower part to the upper part. FlueopeningsVV D are provided on opposite sides through the narrow water-space at the top of the fire-chamber for allowing the smoke and products of combustion from the re to pass off.

E is a safety-valve of any ordinary construction, and F is a steam-pipe connecting with the steam-chamber at the top of the boiler above the water-line, for conveying the steam to the various radiators located at the points to be warmed.

G is the steamgage, and G the water-gage,

' of ordinary construction.

ing the fire, and provided with a door forclosing it tightly at the outer end.

At the junction c of the horizontal and vertical parts of the interior of the boiler-plates the top adapted to rest on the edge of the top opening, and extends down for a short distance below the top of the lower part. The object of thus constructing the magazine in two parts is to enable it to be easily taken out for repair or renewal of the lower part when burned out without removing the boiler from its place in the basement, the floor above, as usually located, being not of sufficient height to admit of raising the magazine out of the boiler, if made in one piece. A cover, B', is laid over the top ofthe magazine.

The boiler thus described is set in brickwork, Lwith open space I all around it, and having the due-opening D connected at the bottom of the open space, so as to cause the draft to pass downward around the outside of the boiler, as indicated by the arrows. 'An

outer jacket may be employed in place of the brick-work; but the latter is preferable.

The arrangement of the pipes and the narrow waterspace completely surrounding the tire, with the nue-openings at the top of the fire-chamber and at the bottom outer space, affords the utmost economy of fuel, and the fuel-magazine enables the fire to be kept up for considerable time without attention.

Te are aware of the patent to Latimer, No. 316, 274, of April 2l, 1885, which shows a boiler having a water-j acket surrounding the combustion-chamber,and oblique water-pipes connecting the water-space near the lower partfof the combvustion-chamber with the Waterspace above it. It also has a double row of iiues through the water-jacket, located at a point inl IOO chamber, the object being to draw the caloric current away from the fuel-magazine and upward from the double row of lues. Our boiler differs from this in various respects. We use only two llues, D, through the water-jacket, and

place them on opposite sides of the combus-l and thence a portion of it with the smoke isV drawn downward tothe bottom of the Waterjacket all around on the outside. We do not use doors in the outer shell registering with the flues, as they would let' in more or less cold air and produce aicooling effect, nor have any air-chamber at the top, nor common iiue at the top of the generator. All of the h'eat that rises in the space outside of the boiler and between it and the brick Wall' above the nes D is confined there,instead of being drawn off by a flue connecting with this space from above; nor does our construction leave an opening between the fuel-magazine and the central opening which communicates with the combustion-chamber; but the opening provided with the ledge at c, and having the l flange bof the lower Section rested upon it, is eiectually closed between the magazine and boiler at the top of the combustion chamber.

to rest onv the top and on ledge at c of the central opening, and the brick-work or outer covering7 I, with space between it and the boiler, and common line D', located at the bottom of said space, as and for the purpose specified.

2. In a stearn-generator, the fnelemagazine B, composed ot' separate sections b b, each provided with a fiange, b', in` combinatioin with the central opening, a, of the boiler, provided with a ledge at c for vresting theilange of said lower section upon, and having the, iiange of said upper sectiouresting. on itsedge at `the top, substantially asspecifed.

HENRY n-Avns. BERTLNE P. BONNELL.

Witnesses:

JOHN H. VrIIPPLE, JAMEs R. DEAN. 

